<template>
  <div class="ratingselect">
    <div class="rating-type border-1px">
      <span @click="select(2)" class="block positive" :class="{'active':selectType===2}">{{desc.all}}<span
        class="count">{{ratings.length}}</span></span>
      <span @click="select(0)" class="block positive" :class="{'active':selectType===0}">{{desc.positive}}<span
        class="count">{{positives.length}}</span></span>
      <span @click="select(1)" class="block negative" :class="{'active':selectType===1}">{{desc.negative}}<span
        class="count">{{negatives.length}}</span></span>
    </div>
    <div @click="toggleContent" class="switch" :class="{'on':onlyContent}">
      <span class="icon-check_circle"></span>
      <span class="text">只看有内容的评价</span>
    </div>
  </div>
</template>

<script>
  const POSITIVE = 0;
  const HEGATIVE = 1;
  const ALL = 2;
  export default {
    name: "ratingselect",
    props: {
      ratings: {
        type: Array,
        default() {
          return [];
        }
      },
      selectType: {
        type: Number,
        default: ALL
      },
      onlyContent: {
        type: Boolean,
        default: false
      },
      desc: {
        type: Object,
        default() {
          return {
            all: '全部',
            positive: '满意',
            negative: '不满意'
          };
        }
      }
    },
    methods: {
      select(type) {
        // 父组件传给子组件的值，子组件不能修改，只能通过传递事件告诉父组件更新数据
        // this.selectType = type;
        this.$emit('update:selectType', type);
      },
      toggleContent() {
        this.$emit('update:onlyContent', !this.onlyContent);
      }
    },
    computed: {
      positives() {
        return this.ratings.filter((rating) => {
          return rating.rateType === POSITIVE;
        });
      },
      negatives() {
        return this.ratings.filter((rating) => {
          return rating.rateType === HEGATIVE;
        });
      }
    }
  }
</script>

<style type="text/less" lang="less" scoped>
  @import "../../common/less/mixin";

  .ratingselect {
    .rating-type {
      padding: 18px 0;
      margin: 0 18px;
      .border-1px(rgba(7, 17, 27, .1));
      font-size: 0;

      .block {
        display: inline-block;
        padding: 8px 12px;
        margin-right: 8px;
        border-radius: 1px;
        font-size: 12px;
        line-height: 16px;
        color: rgb(77, 85, 93);

        &.active {
          color: #fff;
        }

        .count {
          font-size: 8px;
          margin-left: 2px;
        }

        &.positive {
          background-color: rgba(0, 160, 220, .2);

          &.active {
            background-color: rgb(0, 160, 220);
          }
        }

        &.negative {
          background-color: rgba(77, 85, 93, .2);

          &.active {
            background-color: rgb(77, 85, 93);
          }
        }
      }
    }

    .switch {
      padding: 12px 18px;
      line-height: 24px;
      border-bottom: 1px solid rgba(7, 17, 27, .1);
      color: rgba(147, 153, 159);
      font-size: 0;

      &.on {
        .icon-check_circle {
          color: #00c850;
        }
      }

      .icon-check_circle {
        display: inline-block;
        vertical-align: top;
        margin-right: 4px;
        font-size: 24px;
      }

      .text {
        font-size: 12px;
      }
    }
  }
</style>
